Comparison

SmoothOCR vs Paper Diary 2

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SmoothOCR

This application converts camera-captured text into editable digital text. It supports continuous scanning, multi-page management, and multilingual recognition, including Japanese vertical writing. Output options include text files, PDFs, and iCloud synchronization.

Highlights
  • Continuous text scanning
  • Multi-page management
  • Text editing
  • TXT and PDF file export
  • iCloud data synchronization
  • Multilingual support
Features
Read full description

This is an app that can convert characters shown on the camera into text. Features ・Continuous scanning is possible for the time being ・Can manage multiple pages at once ・Simple UI ·Multilingual ・Supports Japanese vertical writing Supported functions ・Text edit ・txt file output ・PDF file output ・Data synchronization between devices using iCloud Terms of service: https://note.com/wakaba_dev/n/nf2c276e954bc Tutorial: https://note.com/wakaba_dev/n/nc1cf9dd8b1a9

About

Paper Diary 2

Features
Read full description

Paper Diary 2は,紙の手帳のように気軽なiOS筆記手帳アプリです. 以前リリースしていた無料版Paper Diaryの有料版になります.以下の特徴があります. ・シンプルなホリゾンタル手帳. ・ログイン無くすぐに筆記可能(Apple Pencilは当然快適として,サードパーティ製のペンでも十分快適です).キーボード入力は一切搭載せず,筆記に特化. ・Apple純正PencilKit使用で快適に筆記可能. ・パームリジェクション対応(指での誤入力を防ぐためデフォルトではペンのみによる筆記が可). ・iCloud自動保存機能(描画は自ら削除するまで消えません.アプリを削除しても描画はiCloud上に残ります). ・iCloudで異なるiPadやiPhoneと描画を共有(iPhoneでは描画の書き込みはできず閲覧のみ可能). ・罫線の長さを任意に変更可能. ・カレンダー連携(Apple純正カレンダーアプリの予定を表示できます). ・テーマカラー変更可能機能. ・ロック機能 ・ダークモード対応. 1度の購入でiPad,iPhone両方でダウンロードして使えるユニバーサルアプリです. おいしい数学X(Twitter)アカウント@oicmath にて随時開発の情報発信や質問対応等行っております. ご意見ご要望はお気軽にお問合せ,X(Twitter)アカウントからお願いします. ※当ページ下部の,デベロッパWebサイトのリンクからもアプリの詳細が確認できます.

Screenshots

SmoothOCR4 screens
Paper Diary 24 screens

Verdict

The call

The clearest difference is update cadence: SmoothOCR at fortnightly against Paper Diary 2's monthly. Paper Diary 2's advantage is price ($2.99 vs $3.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

SmoothOCR costs $3.99 and Paper Diary 2 $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SmoothOCR ships an update fortnightly, Paper Diary 2 monthly. The most recent releases landed on October 5, 2026 and October 22, 2026 respectively.

Scorecard2 real differences · 6 level
SmoothOCR versus Paper Diary 2: the parameters behind the verdict, then further details
ParameterSmoothOCRPaper Diary 2
Price$3.99$2.99 — better
Positive reviews100.0% of reviews—
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperShinya SaitoAkira Hiraoka

In-app purchases

None

SmoothOCR

No in-app purchases

None

Paper Diary 2

No in-app purchases

Questions

Is SmoothOCR free?
SmoothOCR costs $3.99, with no in-app purchases.
Is Paper Diary 2 free?
Paper Diary 2 costs $2.99, with no in-app purchases.
Do SmoothOCR or Paper Diary 2 have ads?
Neither SmoothOCR nor Paper Diary 2 shows ads.
Which is updated more often, SmoothOCR or Paper Diary 2?
SmoothOCR ships an update fortnightly, and Paper Diary 2 monthly. Most recently, SmoothOCR was updated on October 5, 2026 and Paper Diary 2 on October 22, 2026.

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